James logan



(ModeL) J. LOGAN.

PORTABLE MOLD FOR GISTERNS. No. 265,522. Patented Oct. 3, 1882. 2-1 I fa I" 2 Fr .55 9. J c

\\\ JA,,JLULL ATTORNEYS.

IINITED STATES PATENT FFICE.

JAMES LOGAN, or WATERLOO, NEW YORK.

PORTABLE MOLD FOR CISTERNS.

SPECIFICATION forming part of Letters Patent No. 265,522, dated October3, 1882. Application filed July 15, 1882. (ModeL) To all whom it mayconcern.-

Be. it known that I, JAMES LOGAN, of Vi aterloo, in the county of Senecaand State of New York, have invented certain new and useful Improvementsin Portable Molds for Gisterus; and I do hereby declare that thefollowing is a full, clear, and exact description of the invention,which will enable others skilled in the art to which it appertains tomake and use the same, reference being had to the accompanying drawings,which form a part of this specification, and in which- Figure 1 is aperspective view of my portable mold for cisterns. Fig. 2 is across-section of the same; and Fig. 3 is a vertical sectionalview,-showing the manner of its use or application.

Similar letters of reference indicate corresponding parts in all thefigures.

Myinvention has relation to devices for mold ing cisterns in pitsexcavated for them in the ground, the molding material being cement,hydraulic lime, or some other suitable compound or composition whichwill set readily and become impervious to water when set; and itconsists in the detailed construction and combination of parts of aseparable mold, around which the cistern is cast or molded, ashereinafter more fully described and claimed.

In the present illustration of my invention I have shown a mold composedof five parts or sections, besides the key or binding piece; but theremay be a greater or smaller number of sections, according to the size ofthe mold, which will of course depend upon the diameter which thefinished cistern is to have. These parts or sections are respectivelydesignated by the letters A, B, G, D, and E, the letter F designatingthe key-piece. Each part or section except the key-piece has a top andbottom band (shown at G and G) bolted to its -inner or concave face, andthese bands are provided with separable pintle-hinges g g, by means ofwhich the several sections are connected movably and detachably to oneanother. The first and last sectionsviz., A and E-are provided at theouter ends oftheir bands G G with "interlockin gloop-hinges 11151, whichare adapted to be locked together by wedgeshaped keys I. The key-piece Fis beveled to fit between the beveled edges to and f of the outersections, A and E, as shown clearly in Figs. 1 and 2 of the drawings,the hinges H and H overlapping said key-piece and binding itfirmly inits place when the mold is locked for casting.

K is a hole through which the dischargepipe is inserted through themold, and L L L L are notches cut so as to register by pairs, for theinsertions of beams or planks M, the use of which will be describedhereinafter.

The several sections which constitute the mold may be made of wood ormetal, or of wood lined with zinc'or other sheet metal on the outside.In the present illustration of my invention I have shown a mold ofcircular shape; but I do not confine myself to this or any otherparticular shape, so that the essential features in the construction ofthe mold are retained.

The mold is used as follows: A hole or pit is dug in the groundof adepth corresponding to that which the cistern is to have. but of agreater diameter. The bottom of this hole or pit is cleaned, leveled,and grouted, or covered with a layer of cement or concrete, after whichthe mold is placed vertically in the pit, with the parallel beams M Mresting in the notches L L and L L. Cement, bton, (concrete,) or anyother suitable semi-fluid or plastic compo sition is poured into thespace (designated by the letter Sin Fig. 3) between the mold and thesides of the pit; and when this composition has set the mold may bewithdrawn by first removing the wedges I and then the keypiece F, afterwhich the other sections, A, B, O, D, and E, can readily be collapsed byfolding on their hinges or detaching them from one another, for theirready removal, without injury to the sides of the newly-cast cistern.

Itis obvious that the mold may be used above ground,ifdesired, byerectin gadirt wa'll around it, leaving a space between said wall andthe mold, into which space the cement is poured or it may be used in thecasting of a cistern which shall be partially below and partially aboveground by erecting a dirt wall around the pit in which the mold is to besunk, of such a height as to reach up flush with the top of the mold.

I am aware that it is not new to construct portable cistern-molds inseparable sections for the purpose of facilitating the withdrawal poseshown and set forth.

2. In a portable mold for cisterns, two or more pairs of separablesections havingnotches registering in pairs with each other, and adaptedto receive the parallel beams or cross-bars M M, substantially as andfor the purpose set forth.

In testimony that I claim the foregoing as myown I have hereunto affixedmy signature in presence of two Witnesses.

JAMES LOGAN. Vitnesses:

ALBERT Lucas CHILDs, HORATIO A. MARSHALL.

